Parasegetibacter terrae sp. nov., isolated from paddy soil and emended description of the genus Parasegetibacter

Abstract

A Gram-stain-negative, variably shaped, non-flagellated, yellow-pigmented, aerobic bacterium, designated strain SGM2-10T, was isolated from a paddy soil sample from the Suwon region, South Korea. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the isolate was related most closely to Parasegetibacter luojiensis RHYL-37T. Strain SGM2-10T showed highest 16S rRNA gene sequence similarity to P. luojiensis RHYL-37T (95.1 %), Flavitalea populi HY-50RT (95.0 %) and Flavitalea gansuensis JCN-23T (94.4 %). No other species in the family Chitinophagaceae shared more than 94.1 % 16S rRNA gene sequence similarity with strain SGM2-10T. The major fatty acids of strain SGM2-10T were iso-C15 : 0, iso-C15 : 1 G and iso-C17 : 0 3-OH. The only menaquinone was MK-7. The polar lipids comprised phosphatidylethanolamine, seven unknown lipids and ten unknown aminolipids. The G+C content of the DNA of strain SGM2-10T was 46.7 mol%. On the basis of the results of the polyphasic characterization presented in this study, it is concluded that strain SGM2-10T represents a novel species of the genus Parasegetibacter , for which the name Parasegetibacter terrae sp. nov. is proposed. The type strain is SGM2-10T ( = KACC 17341T = JCM 19942T). The description of the genus Parasegetibacter has also been emended.